MCP1252

Power Supply Voltage, VIN...................................................6.0V
Voltage on Any Pin w.r.t. GND ................... -0.3V to (VIN + 0.3V)
Output Short Circuit Duration ....................................continuous
Storage Temperature Range.........................-65°C to +150°C
Ambient Temperature with Power Applied ....-55°C to +125°C
Junction Temperature ................................................. +150°C
ESD Ratings: Human Body Model (1.5 k in Series with 100 pF ...... 4 kV Machine Body Model (200 pF, No Series Resistance 400V

†Notice: Stresses above those listed under "Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

The MCP1252/3 are inductorless, positive-regulated charge pump DC/DC converters. The devices generate egulated fixed (3.3V or 5.0V) or adjustable output voltage. They are specifically designed for applications requiring low noise and high efficiency and are able to deliver up to 120 mA output current. The devices allow the input voltage to Be ower or higher than the output voltage, by automatically switching between buck/ boost operation.

The MCP1252 has a switching frequency of 650 kHz, avoiding interference with sensitive IF bands. The MCP1253 has a switching frequency of 1 MHz and allows the use of smaller capacitors than the MCP1252, thus saving board space and cost.

Both devices feature a power-good output that can be used to detect out-of-regulation conditions. Extremely low upply current and low external parts count (three capacitors) make these devices ideal for small, batterypowered applications. A shutdown mode is also provided for further power reduction. The MCP1252 and MCP1253 feature thermal and short-circuit protection and are offered in space-saving, 8-lead, MSOP packages.